43949438 has 16 divisors (see below), whose sum is σ = 71897280. Its totient is φ = 20026656.

The previous prime is 43949419. The next prime is 43949449. The reversal of 43949438 is 83494934.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8645 + ... + 12752.

It is an arithmetic number, because the mean of its divisors is an integer number (4493580).

Almost surely, 2^43949438 is an apocalyptic number.

43949438 is a deficient number, since it is larger than the sum of its proper divisors (27947842).

43949438 is a wasteful number, since it uses less digits than its factorization.

43949438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21491.

The product of its digits is 373248, while the sum is 44.

The square root of 43949438 is about 6629.4372310174. The cubic root of 43949438 is about 352.8995533126.

The spelling of 43949438 in words is "forty-three million, nine hundred forty-nine thousand, four hundred thirty-eight".